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A rail system mounted on top of a SIG SG 550 A dovetail rail on a rifle receiver for mounting a sight. A rail integration system (RIS; also called a rail accessory system (RAS), rail interface system, rail system, mount, base, gun rail, or simply a rail [1]) is a generic term for any standardized attachment system for mounting firearm accessories via bar-like straight brackets (i.e. "rails ...
The mount is found on the left side of the rifle receiver, with machined cutouts for reduced weight and ease of installation; an example is the PSO-1 optical sight. Similar rails can also be found on rifles such as the Dragunov sniper rifle (SVD), the PSL rifle , the PKM as well as some AK series assault rifles from 1954 onwards.
Some examples of blind mate RF interfaces include BMA (OSP), BMMA (OSSP), SMP, SMPM, SMPS, and Planar Crown connectors. Certain styles of blind mate RF connectors feature a detent or undercut to allow for the mating connector to snap into, improving retention. These styles are typically used when the mate is a cable connector and might see a ...
A sharp bow on a conventional hull form would produce waves and low drag like a bulbous bow, but waves coming from the side would strike it harder. The blunt bulbous bow also produces higher pressure in a large region in front, making the bow wave start earlier. [6] The addition of a bulb to a ship's hull increases its overall wetted area.
Port side and starboard side respectively refer to the left and right sides of the vessel, when aboard and facing the bow. The port and starboard sides of the vessel always refer to the same portion of the vessel's structure, and do not depend on the position of someone aboard the vessel.
The blind flying panel was usually mounted away from the main panel, typically on an arrangement of three rubber suspension points. Around the time of the Second World War , the blind flying panel was a standardised piece of cockpit equipment that was installed on the majority of aircraft operated by the Royal Air Force , to the point where it ...
A bracer (or arm-guard) is a strap or sheath, commonly made of leather, stone or plastic, that covers the ventral (inside) surface of an archer's bow-holding arm. It protects the archer's forearm against injury by accidental whipping from the bowstring or the fletching of the arrow while shooting , and also prevents the loose sleeve from ...
The weight of the bolt can have a serious effect on the range of the bolt. The bolt's total weight includes the bolt's weight, nock, insert, vanes, and broadhead or field point. Almost all bolt manufacturers will list how many grains each shaft weighs or how many grains are in each inch of the shaft.